super.surfaceChanged(holder, format, w, h);
if (mRS == null) {
RenderScriptGL.SurfaceConfig sc = new RenderScriptGL.SurfaceConfig();
sc.setDepth(16, 24);
mRS = createRenderScriptGL(sc);
mRS.setSurface(holder, w, h);
mRender = new SceneGraphRS();
mRender.init(mRS, getResources(), w, h);
}